MTN Customer Service is a DISGRACE.

MTN you overcharge, do not listen to customers, your staff are not trained to listen, you are a disgrace. I have emailed, Twittered, called to no avail. HOW DO I GET WIFI CALLING ON MY IPHONE 11 PRO. YOU SAY IT IS AVAILABLE AND YET NOTHING SHOWS UP IN SETTINGS. PLEASE I AM READY TO PORT TO ANOTHER PROVIDER LIKE VODACOM OR CELL C.